Field Sink : 13 Steps (with Pictures) - Instructables
What kind of foot pump would I need to build a DIY camping sink? - The Great Outdoors Stack Exchange
Whale GP4618 Compact Manual Fresh Water Foot Operated Pump - Black : Amazon.co.uk: Automotive
ETTE Foot Operated Water Pump for Marine Boat Deck RV and Galley Self Priming with Fresh and Sea Water 1/2 Inch Hose, Rubber and Nylon Base : Amazon.co.uk: Sports & Outdoors
If you use a foot pump for water, or plan to, I'm unbelieveably stoked on this upgrade. $12 bucks for this water pump that has a built in 1200mAh battery and recharges